CVE-2025-8285 json
Unauthorized Channel Subscription Creation in Mattermost Confluence Plugin
published last yr. modified 4mo ago also GHSA-qjrx-j8wm-xf83 , GO-2025-3868 , EUVD-2025-24169
- cvss
- 4.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to create channel subscription without proper access to the channel via API call to the create channel subscription endpoint.
Patch / fix
- go github.com/mattermost/mattermost-plugin-confluence 1.5.0
- Mattermost Mattermost Confluence Plugin 1.5.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250818T190335-1.1
opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15469-1
Is CVE-2025-8285 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 4.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-plugin-confluence | <1.5.0 |
1.5.0 |
Affected products
- Mattermost Mattermost Confluence Plugin
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-8285
advisory
-
github.com
/mattermost/mattermost-plugin-confluence
package
-
pkg.go.dev
/vuln/GO-2025-3868
web
-
github.com
/advisories/GHSA-qjrx-j8wm-xf83
advisory
Sources
- CVE List CVE-2025-8285
- GitHub Advisory GHSA-qjrx-j8wm-xf83
- NVD CVE-2025-8285
- OSV GO-2025-3868
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.